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Photoelectric Smoke Detectors System Sensor i3™ series smoke detectors represent significant advancement in conventional detection. The i3 family is founded on three principles: installation ease, intelligence, and instant inspection.
Features • Plug-in detector line, mounting base included • Large wire entry port • In-line terminals with SEMS screws • Mounts to octagonal and single-gang back boxes, 4-square back boxes, or direct to ceiling • Stop-Drop ’N Lock attachment to base
Intelligence. i3 detectors offer a number of intelligent features to simplify testing and maintenance. Drift compensation and smoothing algorithms are standard with the i3 line to minimize nuisance alarms. 2-wire i3 detectors can generate a remote LEDindicated maintenance signal when connected to the 2W-MOD2 loop test/maintenance module or a panel equipped with the i3 protocol. The SENS-RDR, a wireless device, displays the sensitivityof i3 detectors in terms of percent-per-foot obscuration.
• Removable detector cover and chamber • Built-in remote maintenance signaling • Drift compensation and smoothing algorithms • Simplified sensitivity measurement • Wide-angle, dual-color LED indication • Loop testing via EZ Walk feature
Instant inspection. The i3 series provides wide-angle red and green LED indicators for instant inspection of the detector’s condition: normal standby, out-of-sensitivity, alarm, or freeze trouble. When connected to the 2W-MOD2 loop test/maintenance module or a panel with the i3 protocol, the EZ Walk loop test feature is available on 2-wire i3 detectors. This feature verifies the initiating loop wiring by providing LED status indication at each detector.
• Built-in test switch
Agency Listings
S911
3011446
Installation ease. The i3 line redefines installation ease with its plug-in design. This allows an installer to pre-wire bases (included with heads). The large wire entry port and in-line terminals provide ample room for neatly routing the wiring inside the base. The base accommodates a variety of back box mounting methods as well as direct mounting with drywall anchors. To complete the installation, i3 heads plug into the base with a simple Stop-Drop ’N Lock™ action.
7272-1653:152
290-01-E
2093
3180932
Smoke Detector Specifications Architectural/Engineering Specifications Smoke detector shall be a System Sensor i3 Series model number_______, listed to Underwriters Laboratories UL 268 for Fire Protection Signaling Systems. The detector shall be a photoelectric type (Model 2W-B, 4W-B) or a combination photoelectric/thermal (Model 2WT-B, 4WT-B) with thermal sensor rated at 135°F (57.2°C). The detector shall include a mounting base for mounting to 3½-inch and 4-inch octagonal, single-gang, and 4-inch square back boxes with a plaster ring, or direct mount to the ceiling using drywall anchors. Wiring connections shall be made by means of SEMS screws. The detector shall allow pre-wiring of the base and the head shall be a plug-in type. The detector shall have a nominal sensitivity of 2.5 percent-per-foot nominal as measured in the UL smoke box. The detector shall be capable of automatically adjusting its sensitivity by means of drift compensation and smoothing algorithms. The detector shall provide dualcolor LED indication that blinks to indicate power up, normal standby, out of sensitivity, alarm, and freeze trouble (Model 2WT-B, 4WT-B) conditions. When used in conjunction with the 2W-MOD2 module, 2-wire models shall include a maintenance signal to indicate the need for maintenance at the alarm control panel and shall provide a loop testing capability to verify the circuit without testing each detector individually. Electrical Specifications Operating Voltage Nominal: 12/24 V non-polarized Minimum: 8.5 V Maximum: 35 V Maximum Ripple Voltage 30% peak to peak of applied voltage Standby Current 2-wire: 50 µA maximum average; 4-wire: 50 µA maximum average Maximum Alarm Current 2-wire: 130 mA limited by control panel; 4-wire: 20 mA @12 V, 23 mA @ 24 V Peak Standby Current 2-wire: 100 µA; 4-wire: n/a Alarm Contact Ratings 2-wire: n/a; 4-wire: 0.5 A @ 30 V AC/DC Physical Specifications Dimensions (including base) 5.3 inches (127 mm) diameter; 2.0 inches (51 mm) height Weight 6.3 oz (178 g) Operating Temperature Range 2W-B and 4W-B: 32°F to 120°F (0°C to 49°C); 2WT-B and 4WT-B: 32°F to 100°F (0°C to 37.8°C) Operating Humidity Range 0 to 95% RH non-condensing Thermal Sensor 135°F (57.2°C) fixed Freeze Trouble 2WT-B and 4WT-B only: 41°F (5°C) Sensitivity 2.5%/ft nominal Input Terminals 14 to 22 AWG Mounting 3½-inch octagonal back box 4-inch octagonal back box Single-gang back box 4-inch square back box with a plaster ring Direct mount to ceiling LED Modes LED Mode Power up Normal (standby) Out of sensitivity Freeze trouble Alarm
Green LED Blink every 10 seconds Blink every 5 seconds off off off
Power-Up Sequence for LED Indication Condition Initial LED status indication
Red LED Blink every 10 seconds off Blink every 5 seconds Blink every 10 seconds Solid
Duration 80 seconds
Ordering Information Model 2W-B 2WT-B 4W-B 4WT-B Accessories 2W-MOD2 SENS-RDR
Thermal No Yes No Yes
Wiring 2-wire 2-wire 4-wire 4-wire
2-wire loop test / maintenance module Sensitivity reader
Alarm Current 130 mA max. limited by control panel 130 mA max. limited by control panel 20 mA @ 12 V, 23 mA @ 24 V 20 mA @ 12 V, 23 mA @ 24 V RT A77-AB2
3825 Ohio Avenue • St. Charles, IL 60174 Phone: 800-SENSOR2 • Fax: 630-377-6495
Removal / replacement tool Retrofit adapter bracket, 6.6 inch (16.76 cm) diameter
©2009 System Sensor. Product specifications subject to change without notice. Visit systemsensor.com for current product information, including the latest version of this data sheet. A05-0318-007 • 6/09 • #2169
